Abstract
Physical layer security is an important method to improve the secrecy performance of wireless communication systems. In this paper, we analyze the effect of employing channel correlation to improve security performance in multiple-input multiple-output (MIMO) scenario with antenna selection (AS) scheme. We first derive the analytical expressions of average secrecy capacity (ASC) and secrecy outage probability (SOP) by the first order Marcum Q function. Then, the asymptotic expressions of ASC and SOP in two specific scenarios are further derived. The correctness of analytical and asymptotic expressions is verified by Monte Carlo simulations. The conclusions suggest that the analytical expressions of ASC and SOP are related to the product of transmitting and receiving antennas; increasing the number of antennas is beneficial to ASC and SOP. Besides, when the target rate is set at a low level, strong channel correlation is bad for ASC, but is beneficial to SOP.
| Original language | English |
|---|---|
| Pages (from-to) | 276-290 |
| Number of pages | 15 |
| Journal | China Communications |
| Volume | 22 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2025 |
Keywords
- average secrecy capacity
- channel correlation
- multiple-input multiple-output
- physical layer security
- secrecy outage probability
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